Ответ 850
32200| 4
- | 8050
32
20
-
20
15 * 14 = 5 * 3 * 2 * 7 = 5 * 2 * 3 * 7 = 10*21 = 210
35 * 12 = 5 * 7 * 2 * 6 = 5 * 2 * 7 * 6 = 10 * 42 = 420
44 * 25 = 11 * 4 * 25 = 4* 25 * 11 = 100 *11 = 1100
75 * 16 = 25 * 3 * 4 * 4 = 25 * 4 * 3 * 4 = 100 * 12 = 1200
5y+3(7y+18)=106
5y×7y+3×7y+5y×18+3×18 = 35y+3×7y+5y×18+54 = 106
35y+3×7y+5y×18 = 106-54 = 52
35y+21y+90y=52
146y=52
y=52:146
y=0,35616438...
Мб так....хотя хз ===============================================
1) 100%-85%=15% ( отлили бензина) ; 2) пропорция 4,5т=15% , х=100% ; х=4,5т*100%:15%=30т. Ответ : 30т бензина.